22515130 has 32 divisors (see below), whose sum is σ = 44478720. Its totient is φ = 8137920.

The previous prime is 22515127. The next prime is 22515139. The reversal of 22515130 is 3151522.

It is a junction number, because it is equal to n+sod(n) for n = 22515098 and 22515107.

It is not an unprimeable number, because it can be changed into a prime (22515139) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 21151 + ... + 22189.

It is an arithmetic number, because the mean of its divisors is an integer number (1389960).

Almost surely, 2^22515130 is an apocalyptic number.

22515130 is a deficient number, since it is larger than the sum of its proper divisors (21963590).

22515130 is a wasteful number, since it uses less digits than its factorization.

22515130 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1254.

The product of its (nonzero) digits is 300, while the sum is 19.

The square root of 22515130 is about 4745.0110642653. The cubic root of 22515130 is about 282.3740739306.

Adding to 22515130 its reverse (3151522), we get a palindrome (25666652).

It can be divided in two parts, 2251 and 5130, that added together give a triangular number (7381 = T₁₂₁).

The spelling of 22515130 in words is "twenty-two million, five hundred fifteen thousand, one hundred thirty".